Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S0100-83582017350100055 http://hdl.handle.net/11449/170110 |
Resumo: | In Brazil, ryegrass (Lolium multiflorum) has been identified as resistant to glyphosate, becoming a major problem, especially in crops cultivated in the winter season. This herbicide can indirectly affect photosynthesis by inhibiting biosynthesis of many compounds. Thus, the aim of this study was to investigate the influence of glyphosate on the physiological profile of susceptible and resistant ryegrass populations to the herbicide. The experimental design was completely randomized with two treatments (720 and 1,080 g e.a. ha-1) and four replications plus control with no treatment. Two ryegrass populations were sown, one susceptible and another one resistant to glyphosate. After the treatments, evaluations were carried out at 1, 3, 7 and 28 days after application (DAA). Variables analyzed were: CO2 net assimilation rate, stomatal conductance, CO2 internal concentration, transpiration, water use efficiency and instantaneous carboxylation efficiency. The glyphosate herbicide caused irreversible damage in a susceptible population which at 28 DAA in all variables analyzed this population was already dead and it was impossible to analyze it, but it was shown that the effects of this herbicide were intensified from the third day after application. In the case of the resistant population, at 3 DAA in all variables, it suffered significant effects comparing to the control, showing that even with a high level of resistance the herbicide can affect its metabolism. |
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Influência do glyphosate em populações de azevém suscetível e resistente ao herbicidaInfluence of glyphosate on susceptible and resistant ryegrass populations to herbicideHerbicide resistanceLolium multiflorumPhotosynthesisIn Brazil, ryegrass (Lolium multiflorum) has been identified as resistant to glyphosate, becoming a major problem, especially in crops cultivated in the winter season. This herbicide can indirectly affect photosynthesis by inhibiting biosynthesis of many compounds. Thus, the aim of this study was to investigate the influence of glyphosate on the physiological profile of susceptible and resistant ryegrass populations to the herbicide. The experimental design was completely randomized with two treatments (720 and 1,080 g e.a. ha-1) and four replications plus control with no treatment. Two ryegrass populations were sown, one susceptible and another one resistant to glyphosate. After the treatments, evaluations were carried out at 1, 3, 7 and 28 days after application (DAA). Variables analyzed were: CO2 net assimilation rate, stomatal conductance, CO2 internal concentration, transpiration, water use efficiency and instantaneous carboxylation efficiency. The glyphosate herbicide caused irreversible damage in a susceptible population which at 28 DAA in all variables analyzed this population was already dead and it was impossible to analyze it, but it was shown that the effects of this herbicide were intensified from the third day after application. In the case of the resistant population, at 3 DAA in all variables, it suffered significant effects comparing to the control, showing that even with a high level of resistance the herbicide can affect its metabolism.Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)Universidade Estadual Paulista (Unesp)Picoli, G. J. [UNESP]Carbonari, C. A. [UNESP]Matos, A. K.A. [UNESP]Rodrigues, L. F.O.S. [UNESP]Velini, E. D. [UNESP]2018-12-11T16:49:18Z2018-12-11T16:49:18Z2017-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1590/S0100-83582017350100055Planta Daninha, v. 35.0100-8358http://hdl.handle.net/11449/17011010.1590/S0100-83582017350100055S0100-835820170001002532-s2.0-85028994845S0100-83582017000100253.pdf98554934481617020000-0003-0431-5942Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPlanta Daninha0,365info:eu-repo/semantics/openAccess2024-01-18T06:24:35Zoai:repositorio.unesp.br:11449/170110Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:19:53.192792Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida Influence of glyphosate on susceptible and resistant ryegrass populations to herbicide |
title |
Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida |
spellingShingle |
Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida Picoli, G. J. [UNESP] Herbicide resistance Lolium multiflorum Photosynthesis |
title_short |
Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida |
title_full |
Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida |
title_fullStr |
Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida |
title_full_unstemmed |
Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida |
title_sort |
Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida |
author |
Picoli, G. J. [UNESP] |
author_facet |
Picoli, G. J. [UNESP] Carbonari, C. A. [UNESP] Matos, A. K.A. [UNESP] Rodrigues, L. F.O.S. [UNESP] Velini, E. D. [UNESP] |
author_role |
author |
author2 |
Carbonari, C. A. [UNESP] Matos, A. K.A. [UNESP] Rodrigues, L. F.O.S. [UNESP] Velini, E. D. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Picoli, G. J. [UNESP] Carbonari, C. A. [UNESP] Matos, A. K.A. [UNESP] Rodrigues, L. F.O.S. [UNESP] Velini, E. D. [UNESP] |
dc.subject.por.fl_str_mv |
Herbicide resistance Lolium multiflorum Photosynthesis |
topic |
Herbicide resistance Lolium multiflorum Photosynthesis |
description |
In Brazil, ryegrass (Lolium multiflorum) has been identified as resistant to glyphosate, becoming a major problem, especially in crops cultivated in the winter season. This herbicide can indirectly affect photosynthesis by inhibiting biosynthesis of many compounds. Thus, the aim of this study was to investigate the influence of glyphosate on the physiological profile of susceptible and resistant ryegrass populations to the herbicide. The experimental design was completely randomized with two treatments (720 and 1,080 g e.a. ha-1) and four replications plus control with no treatment. Two ryegrass populations were sown, one susceptible and another one resistant to glyphosate. After the treatments, evaluations were carried out at 1, 3, 7 and 28 days after application (DAA). Variables analyzed were: CO2 net assimilation rate, stomatal conductance, CO2 internal concentration, transpiration, water use efficiency and instantaneous carboxylation efficiency. The glyphosate herbicide caused irreversible damage in a susceptible population which at 28 DAA in all variables analyzed this population was already dead and it was impossible to analyze it, but it was shown that the effects of this herbicide were intensified from the third day after application. In the case of the resistant population, at 3 DAA in all variables, it suffered significant effects comparing to the control, showing that even with a high level of resistance the herbicide can affect its metabolism. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-01-01 2018-12-11T16:49:18Z 2018-12-11T16:49:18Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S0100-83582017350100055 Planta Daninha, v. 35. 0100-8358 http://hdl.handle.net/11449/170110 10.1590/S0100-83582017350100055 S0100-83582017000100253 2-s2.0-85028994845 S0100-83582017000100253.pdf 9855493448161702 0000-0003-0431-5942 |
url |
http://dx.doi.org/10.1590/S0100-83582017350100055 http://hdl.handle.net/11449/170110 |
identifier_str_mv |
Planta Daninha, v. 35. 0100-8358 10.1590/S0100-83582017350100055 S0100-83582017000100253 2-s2.0-85028994845 S0100-83582017000100253.pdf 9855493448161702 0000-0003-0431-5942 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Planta Daninha 0,365 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129508189929472 |